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NVD Vulnerability Details :
CVE-2026-41100
Analyzed
More InfoOfficial Page
Source-secure@microsoft.com
View Known Exploited Vulnerability (KEV) details
Published At-12 May, 2026 | 18:17
Updated At-16 May, 2026 | 01:49

Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.14.4MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Type: Primary
Version: 3.1
Base score: 4.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CPE Matches
Microsoft Corporation
microsoft
>>365_copilot>>Versions before 16.0.19822.20190(exclusive)
cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:android:*:*
Weaknesses
CWE IDTypeSource
CWE-284Primarysecure@microsoft.com
NVD-CWE-OtherPrimarynvd@nist.gov
CWE ID: CWE-284
Type: Primary
Source: secure@microsoft.com
CWE ID: NVD-CWE-Other
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41100secure@microsoft.com
Vendor Advisory
Hyperlink: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41100
Source: secure@microsoft.com
Resource:
Vendor Advisory
Change History
0Changes found
Details not found